Have you considered profligate government spending? Using currency swaps to hide deficits with the help of Goldman Sachs? It wasn't speculators who pushed Greece's deficit up to 13%. "Speculators" is the straw man of European politicians, who don't want to admit blame (not something confined to European politicians).
Then there is also the fact that when traditionally high interest-rate countries like Spain and Ireland entered the Eurozone, cheap financing was available for the first time. This resulted in a housing/construction boom and then crash. All the taxes from property development and services evaporated, which makes it harder to service debt.
Sure, housing was overpriced for a few different reasons. There's quite a few causes of it, you probably know a lot of them. But - it was definitely overpriced (in a "bubble").
Now, we're having what's called a "correction" - a correction is where housing prices come back into line with where they'd in a more sensible environment. This is where stupid and reckless people get burned, and people who were sensible and saved their money now buy at the correct market prices.
Krugman is saying we should print money, which strips the value of people holding cash via inflation. This transfers money from people holding cash to people holding debt (because during inflation, hard assets like housing increase in price relative to debt - mortgages). That takes money primarily from middle class people who were sensible and cautious, and distributes that money to a mix of middle class people who weren't sensible and to upper class people (who typically have significant debt and hard assets).
Krugman's basically saying - "whoa, whoa, whoa, we can't let this correction happen - instead, we should take money from people who didn't play in this mess and give it to people who did" - that is horrific.
> And since economics is not a science who decides what is good economics?
Economics can have falsifiable hypotheses, so it can be science at times. But you're right, I should have called Krugman's ideas reckless policy instead of economics. It's more policy than economics, yes.
This, besides the fact that a correction has already happened, as evidenced by the drop in house prices and the number of homes in foreclosure.
If there is another "correction" now, beyond what has already happened, and it causes even more bankruptcies, discharged debts, haircuts, bank runs, and the like, then the entire economy will suffer, not just those who played in the mess.
As banks look toward deflationary times, they are holding onto cash reserves. (http://research.stlouisfed.org/fred2/series/EXCRESNS) This may be because they fear making loans that will not be paid back 100%, but the result is deflationary because they are all doing it, and they are all keeping that money from the system. It's a self-fulfilling prophecy.
A deflationary period, while our country has so much private debt, combined with high unemployment, will likely leave us with more and more bankruptcies and the "dynamo problem" of the great depression. If this is what you're looking forward to to punish a few house flippers, well, I can't agree with your sentiment on that.